Swivel chair



FIG. 1 is a front perspective view of a swivel chair according to a first embodiment of the invention;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front perspective view of a swivel chair according to a second embodiment of the invention;

FIG. 6 is a rear perspective view thereof;

FIG. 7 is a front elevational view thereof;

FIG. 8 is a rear elevational view thereof;

FIG. 9 is a front perspective view of a swivel chair according to a third embodiment of the invention;

FIG. 10 is a rear perspective view thereof;

FIG. 11 is a front elevational view thereof; and

FIG. 12 is a rear elevational view thereof. 

The ornamental design for a swivel chair, substantially as shown and described. 